Eli5: so, whatever makes up light( photons or so) never fades…?

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I am watching these images from James Webb telescope, and it talks about light that travelled 13 billion years!! And I am wondering then, what in this light is never disintegrating as most thing with time…?

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Anonymous 0 Comments

As far as we know, photons are a single unit that cannot be split. With that, the photon either reaches us, or goes in another direction, but there’s no real decay process that can happen

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